Hi,
We are trying to convert existing (and large) 'makefiles' to take advantage of new
hardware with multiple CPUs. From the manual and man pages, I found our that we can
activate parallel execution using the '-J' option, and disable it with '.NOTPARALLEL'.
I was hoping that there are some suggestion on how to enable (or disable) the parallel
build for specific targets.
For example, we have targets like:
release: pre-compile compile install # Must be executed serially
and
OBJECTS = file1.o file2.o file3.o
program: $(OBJECTS) # can be parallelized
$(CC) -o program $(OBJECTS)
One possibility is to modify the 'release' target is to expand the dependency (as
below). I was hoping that there are easier solutions that will reduce the amount of
rewrites for exisitng makefiles. A good solution will make it possible to mark
specific targets as "parallel", i.e.:
.NOTPARALLEL: %
.PARALLEL: program
Expanded solution:
release: install
install: compile
<do install>
compile: pre-compile
<Do compilation>
Thanks
Yair Lenga
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